Holding device for attachments for sports footwear



Dec. 24, 1957 R. F. DASSLER HOLDING DEVICE FOR ATTACHMENTS FOR SPORTS FOOTWEAR Filed Oct. 10. 1955 INVENTOR RuDoLF Fnwyz 04.5 SLER EE-E HOLDING DEVICE FOR ATTACHNIENTS FOR SPORTS FOOTWEAR Rudolf Franz Dassler, Herzogenaurach, near Numberg, Germany, assignor to Firm Puma-Schuhfahrik Rudolf Dassler, Herzogenaurach, Germany Application October 10, 1955, Serial No. 539,603 Claims priority, application Germany February 28, 1955 5 Claims. (Cl. 36-59) The invention relates to a holding device for securing attachments on sports footwear, for example screw studs on football boots, screw spikes on running shoes and the like.

It is known to sink into the sole a sleeve having an internal thread for receiving the screw pin of the attachment, for example a stud. It is also known to provide this sleeve with a transverse plate which bears against the sole. If, as is usually the case, this transverse plate bears against the under side of the outer sole and if it is secured in position by means of a few nails, on the one hand, its hold is not satisfactory and, on the other hand, the assembly thereof is complicated and wastes time. It has already been proposed to place the transverse disk on the inner side of the outer sole and to secure it thereon by means of angular edge teeth. This, however, gives rise to the objection that, when it is necessary to exchange a holding device, it is necessary to take off the outer sole in order to remove the disk between the outer sole and the inner sole. Consequently, another suggestion is to mount the transverse disk on the upper side of the inner sole, so that it is not necessary to take off the outer sole to exchange the holding device. This solution is, however, likewise unsatisfactory. Apart from the fact that the screw pin of the stud is not gripped along its entire length by the internal screw thread, such a construction gives rise to the objection that, if the screw stud after being in use for some time becomes slightly loose and therefore no longer bears against the bottom of the outer sole, the axial pressures which occur will result in the sleeve being push-ed upwards and the transverse disk lifting off the inner sole a distance determined .by the amount of play of the loosened stud. As a result thereof the holding device will not only lose its firm hold or grip but will produce uncomfortable pressure points for the wearer of the shoe.

The invention overcomes these objections in that the sleeve extending through the outer sole and the inner sole is made in one piece with a transverse disk bearing against the underside of the outer sole and also a retaining n'ng bearing against the upper side of the inner sole. Consequently, the sleeve according to the invention is provided at its two opposite ends with a lower transverse member bearing against the outer sole and an upper transverse member bearing against the inner sole respectively. Therefore axial displacement of the. holding device is absolutely impossible. At the same time the additional advantage is derived by this construction that the screw pin of the attachment, for example a screw stud, can be gripped along its entire length by the internal thread of the sleeve. Another advantage is that the holding device, because the two soles are in a certain sense clamped between the two transverse members, is capable of reliably withstanding the stresses which occur and cannot loosen unintentionally. At the same time it is important that the holding device can, if necessary, be removed and replaced by a new one without taking off the soles by merely axially drilling out the sleeve.

United States Patent 0 ICC A special improvement resides also in the fact that the holding device is made in one piece, so that the manu facture and assembly of several parts is no longer necessary. This is attained in a simple manner according to the invention in that the retaining ring located on the top of the inner sole is formed by the bent over or beaded over upper edge of the sleeve. In this manner the additional advantage can be obtained that, as a suitable pressing pressure is used when heading over the edge, the soles are clamped between the transverse members of the holding device sleeve. Thus a particularly reliable anchorage of the device is attained.

The above described holding device for screw-on attachments for sports footwear, for example screw studs of football boots, can, according to a further development of the fundamental idea of the invention, be considerably improved by making the sleeve which extends through the outer and inner soles, in one piece both with the transverse disk bearing against the under side of the outer sole and also with a retaining ring bearing against the upper side of the inner sole, this retaining ring being preferably formed by a bent over serrated or plain edge portion of the sleeve.

The present invention aims at achieving an improvement in that the counter screw thread for the attachment is located in the sleeve and can, in the event of any damage, be easily removed and exchanged.

This object is attainable in that the screw-thread of the sleeve is arranged on an insert or bushing exchangeably fitted therein and that into this insert or bushing the screw threaded pin of the attachment can be secured. It is therefore likewise possible to secure in the sleeve a plug with screw pin extending from it which in turn can be screwed into an internal screw thread in the attachment. In any case it is advisable to secure against turning the counter screw carrying part introduced into the sleeve, for example by making the same of suitable shape.

According to another feature of the invention, the in sert is fixed in the sleeve so that it bears against a ringshaped abutment at the end of the sleeve carrying the attachment.

By this further improvement the aforementioned problem is solved in a manner which is both simple and advantageous. After unscrewing the attachment it is easily possible to knock the thread carrier out of the sleeve from underneath. This applies equally well whether the screw carrier is constructed as a nut or accommodates a screw plug.

Other advantages and features of the invention are hereinafter described with reference to the accompanying drawing which illustrates diagrammatically the practical application of the invention.

Fig. 1 shows in longitudinal section a holding device emplaced into a sole for receiving a screw stud for football boots;

Fig. 2 is a section on a larger scale showing the holding device sleeve before it is secured in place;

Fig. 3 is an end view thereof;

Fig. 4 shows an end View of a modified form of construction;

Fig. 5 is a longitudinal section through a further modified embodiment of the device;

Fig. 6 is a longitudinal section of another-form of construction, and

Fig. 7 shows in longitudinal section yet another form of construction.

The holding device comprises a sleeve a which is provided with an internal screw thread b for receiving the screw pin 0 of a stud d. On one end of the sleeve a a transverse disk e is arranged. This disk can be round as shown in Fig. 3. However, as can be seen from Fig. 4, it is also possible to make it non-circular, for example of polygonal shape. The disk 2 in that case then securely holds. the sleeve against. turning.

While the transverse disk e bears against the outer sole, the holding device according to the invention is held by a. retaining ring it on the inner sole g. In the example illustrated this retaining ring is formed by bending over or beading the edge i of the sleeve a. To facilitate the beading operation it is advisable to provide the sleeve a with a neck k, the internal diameter of which is wider than the diameter of the screw thread bore and which preferably has a conically tapering inner wall I.

Instead of using a bea'ded ring 11, it is possible to realize the idea of the invention by folding the edge 1' radially outwardly and then pressing it on to the inner sole g in the form of a ring of bent over. edge teeth. The firmness is, however, greater in the case of the beaded edge h, if. this is kept somewhat bulbous in shape, as can be seen from the drawing.

Owing to the axial pressure exerted during the heading operation both the retaining ring h is pressed into the inner sole g and the transverse di's'k e into the outer sole 7. These parts of the holding device therefore bear tightly against their respective soles.

To facilitate the pressing-in of the transverse disk e, it is advantageous to allow its wall thickness to taper conically in the outward direction.

It is evident that the transverse disk e can be provided in known manner with substantially axially parallel teeth, clips or the like along its edge, which can be pressed into the sole.

The developments illustrated in Figures 5 to 7 are hereinafter described.

The sleeve a is in each case made in one piece with the transverse disk e which bears against the outer sole f and also in one piece with the retaining ring h, formed by beading or the like, which bears against the inner sole g and is preferably pressed therein. In the form of construction shown in Fig. 5, an insert m is fitted in the sleeve a and carries the internal screw thread b into which the screw pin 0, secured in the stud d in a well known manner, can be secured. The insert m may, as already mentioned, be locked against rotation by being made of a suitable shape, such as polygonal shape, or some other suitable means. To ensure that it remains in its position for use and does not displace axially, it is advisable to clamp, screw or otherwise fix it in the sleeve a. It bears against an annular abutment n on the sleeve a, the internal diameter of which abutment is preferably so wide that, after the stud d and the pin e have been unscrewed, an aperture remains which allows the introduction of a punch or the like for knocking out the insert m.

The form of construction, illustrated in Fig. 6, diifers from that above described in that in this case a nut o is fitted in the stud d and cooperates with a screw plug p mounted in the insert m which is exchangeably fitted in the sleeve a in the manner above described.

As can be seen from Fig. 7, the annular abutment n can be arranged more towards the upper end of the device. It is then possible to enlarge the insert m slightly at q so that in this manner it is secured against axial displace ment. In any case it is advisable to make the insert of some non-rusting material, such as brass.

I claim:

1. In a sports footwear provided with a sole means having an inner and outer exposed portion and an aperture therein, a fastening device for a threaded calk attachment, comprising a sleeve in said aperture extending through said sole of said sports footwear, a transverse disk portion on one extremity of said sleeve having an outwardly diverging beveled surface bearing against said outer exposed portion of said sole means, said transverse disk portion of saidsleeve having a flat surface opposite to said outwardly diverging beveled surface lying flush with said outer exposed. portion of said sole means, said transverse disk having an outer peripheral configuration abutting said outer exposed portion of said sole means for forming a tight frictional engagement therewith and thereby preventing relative rotation thereof, a retaining ring on an opposite extremity of said sleeve bearing against and lying flush with said inner exposed portion of said sole means, said retaining ring being of decreasing thickness towards its outer edge and of arcuate contour, threaded means secured within said sleeve against axial movement thereof in an outward direction, said threaded means forming a counterthrea'd for said threaded calk attachment to secure said threaded calk attachment to said fastening device by the threaded engagement thereof with said insert means, said threaded means secured within said sleeve comprising a threaded insert in the form of a nut, said threaded calk attachment comprising a screw pin and a calk, and said screw pin being embedded in said calk.

2. In a sports footwear the combination as set forth in claim 1, wherein said transverse disk has an hexagonal outer peripheral configuration.

3. In a sports footwear, the combination as set forth in claim 1, wherein said nut is also secured against axial movement in an inward direction.

4. In a sports footwear provided with a sole means having an inner and outer exposed portion and an aperture therein, a fastening device for a threaded calk attachment, comprising a sleeve in said aperture extending through said sole of said sports footwear, a transverse disk portion on one extremity of said sleeve having an outwardly diverging beveled surface bearing against said outer exposed portion of said sole means, said transverse disk portion of said sleeve having a flat surface opposite to saidoutwardly diverging beveled surface lying flush with said outer exposed portion of said sole means, said transverse disk having an outer peripheral configuration abutting said outer exposed portion of said sole means for forming a tight frictional engagement therewith and thereby preventing relative rotation thereof, a retaining ring on an opposite extremity of said sleeve bearing against and lying flush with said inner exposed portion of said sole means, said retaining ring being of decreasing thickness towards its outer edge and of arcuate contour, threaded means secured within said sleeve against axial movement thereof in an outward direction, said threaded means forming a counter-thread for said threadedcalk attachment to secure said threaded calk attachment to said fastening device by the threaded engagement thereof with said insert means, said threaded means secured within said sleeve comprising a threaded insert, said threaded insert being a screw plug threaded on only one end, said threaded calk attachment comprising a nut and a calk, and said nut being embedded in said calk for receiving said screw plug.

5. In a sports footwear, the combination as set forth in claim 4, wherein said transverse disk has an hexagonal outer peripheral configuration.

References Cited in the tile of this patent UNITED STATES PATENTS 1,463,514 Lilienfeldt July 31, 1923 1,942,574 Shapiro Jan. 9, 1934 1,945,840 Wiggin Feb. 6, 1934 1,948,885 Riddell Feb. 27, 1934 2,235,774 Pierce Mar. 18, 1941 2,276,887 Smith Mar. 17, 1942 2,517,179 Daniels Aug. 1, 1950 FOREIGN PATENTS 249,855 Switzerland Jan. 3, 1948 674049 Great Britain May 26, 1949 

